AffirmCheckoutRemote

Senior Software Engineer, Backend (Partner Merchant Interface)

Remote CanadaFull-timeSenior$153,000 – $213,000
Posted Sep 9, 2026Deadline: Keep Open
Job SnapshotActively hiring
LocationRemote Canada
Job typeFull-time
Salary$153,000 – $213,000
DeadlineKeep Open

Finjobsly Role Intelligence

Experience level
Senior
Work style
Remote
Visa sponsorship
Not specified
Salary
$153,000 – $213,000
Key skills
PythonMySQLRESTAWSKubernetes

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Company insights

66

Happiness score

66/100

Based on 12 verified employee signals

Affirm posts 33% revenue growth and $14.1B in quarterly GMV

Fiscal Q4 2026 revenue reached $1.2B, up 33% year over year, while GMV rose 36% to $14.1B. Operating income equaled 13% of revenue.

August 2026From the webAffirm Investor Relations

Affirm promotes Michael Linford from COO to President

Affirm appointed Michael Linford President effective Aug. 27, 2026, expanding his oversight to revenue, global markets, legal, compliance and public affairs.

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Shopify merchants in Australia can now activate Affirm-powered installment payments offering eligible shoppers fortnightly or monthly plans.

August 2026From the webAffirm Investor Relations

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Affirm began rolling its payment options into Google Search, including AI Mode, and the Gemini app through Google Pay, extending BNPL into AI-assisted shopping.

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AI Generated Insights

Finjobsly Intelligence— Generated from the employer's job description

What you'll own

Develop and maintain the backend APIs that power partner integrations, including high‑traffic services for top partners like Amazon and Stripe, while balancing speed and system reliability.

What they're looking for

Experienced backend engineers with strong Python or Kotlin skills, familiar with distributed systems, AWS, MySQL, and Kubernetes, and capable of writing clear, well‑tested, extensible code.

Why this role matters

These APIs enable merchants to integrate with Affirm’s credit product, directly driving revenue and customer experience across major partners.

Fintech requirements

Visa sponsorship: No
Work arrangement: remote

About this role

At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.

The Partner Merchant Interfaces - Integration team within Decisions Foundations is growing and we are looking for a Software Engineer. You will be part of a fast paced team which is responsible for the APIs that Partners and Merchants use to integrate with Affirm, and also power some of our top partners like Amazon and Stripe.


What You'll Do

· With the support of your team, you will work on tasks that contribute to the team's projects and goals.
· You will work collaboratively and proactively with your team and stakeholders, bringing them along for your work and helping to create visibility and dialog regarding the risks and trade-offs related to your work.
· You will strike the right balance of speed and quality in your work, ensuring that we hit our business goals while protecting our systems from downtime.
· You will contribute to a sense of community on your team by engaging in growth and development activities.


What We Look For

· You have previous work or internship experience designing, developing and launching backend systems at scale and are experienced using one of Python or Kotlin.
· You are familiar with the building blocks of distributed systems, and the technologies like AWS, MySQL and Kubernetes.
· You have mastered taking a simple problem or business scenario into a solution that interacts with multiple software components, and executing on it by writing clear, easily understood, well tested and extensible code.
· You are comfortable navigating a large code base, debugging others' code, and providing feedback to other engineers through code reviews.
· Your experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders.
· You have strong verbal and written communication skills that support effective collaboration with our global engineering team.

Base Pay Grade - N
Equity Grade - 6
Employees new to Affirm typically come in at the start of the pay range. Affirm focuses on providing a simple and transparent pay structure which is based on a variety of factors, including location, experience and job-related skills. 


Base pay is part of a total compensation package that may include monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). In addition, the employees may be eligible for equity rewards offered by Affirm Holdings, Inc. (parent company).


CAN base pay range per year: $153,000 - $213,000

This remote role is open only to candidates residing in Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island, or Saskatchewan


LI-Remote

Remote-first with flexibility built in
Affirm is proud to be a remote-first company. Most roles can be done from almost anywhere within the country of employment. Some positions may occasionally require in-person work at an Affirm office, and a few are office-based due to the nature of the work. All new hires will be invited to attend an in-person onboarding experience.

Benefits designed for you
Our benefits reflect our commitment to care, transparency, and flexibility. Here are a few highlights:

  • Health coverage at no cost: We cover 100% of premiums for employees and their dependents.
  • Spending stipends: Monthly stipends support your tech setup, and the ability to choose health and wellness options that are right for you.
  • Time off to recharge: Flexible time off and generous holiday calendars help you rest when you need to.
  • Own a piece of what you build: Our employee stock purchase plan (ESPP) lets you buy Affirm stock at a discount.

We’re committed to providing an inclusive interview process, including accommodations for candidates with disabilities. If you need support, we’re happy to help.

For positions based in San Francisco or Los Angeles: Affirm considers qualified applicants with arrest and conviction records, as required by law.

By clicking "Submit Application," you acknowledge that you have read Affirm's Global Candidate Privacy Notice and consent to the use of your personal information as described.

More about this role

About company

Required skills

PythonMySQLRESTAWSKubernetes